how is long and complex supposed to be appealing? some things long and complex are long and complex for the sake of being long and complex when they could've expressed the same idea to the same extent in ten times fewer the words.

...well that's true when its true isn't it ?
There is a distinction between complex and complicated, and I for one, would not recommend any complicated reading.
(specially in Philosophy where being clear is absolutely necessary)
Not to confuse with being dumbed down or simplified.

Not in this case no. I don't have a particular preference when it comes to Nietzsche. Not only his writing is awfully misleading but his ideas on the roll of Man in the world are wrong at a base level. Nietzsche is somewhat trivial and lacks depth on his departure of metaphysics...hence its appealing to young men, naive scientists, and American pragmatic philosophy at large.
Believing man is free to build its destiny against Being is an appalling act of wishful thinking.